LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES - Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	$ 45,832	$ 43,436
(Charge-offs)	(1,446)	(933)
Recoveries	102	247
Provision (Benefit) for Credit Losses on Loans Receivable	1,344	1,231
Ending Allowance	45,832	43,981
Farmland
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	126	159
(Charge-offs)	0	0
Recoveries	0	0
Provision (Benefit) for Credit Losses on Loans Receivable	9	(30)
Ending Allowance	135	129
Owner-occupied, nonfarm nonresidential properties
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	3,949	2,905
(Charge-offs)	(596)	(26)
Recoveries	9	8
Provision (Benefit) for Credit Losses on Loans Receivable	1,111	(341)
Ending Allowance	4,473	2,546
Agricultural production and other loans to farmers
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	7	6
(Charge-offs)	0	0
Recoveries	0	0
Provision (Benefit) for Credit Losses on Loans Receivable	1	(3)
Ending Allowance	8	3
Commercial and Industrial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	9,433	9,766
(Charge-offs)	(71)	(46)
Recoveries	29	145
Provision (Benefit) for Credit Losses on Loans Receivable	(418)	(922)
Ending Allowance	8,973	8,943
Obligations (other than securities and leases) of states and political subdivisions
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	2,613	1,863
(Charge-offs)	0	0
Recoveries	0	0
Provision (Benefit) for Credit Losses on Loans Receivable	(76)	(15)
Ending Allowance	2,537	1,848
Other loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	387	456
(Charge-offs)	0	0
Recoveries	0	0
Provision (Benefit) for Credit Losses on Loans Receivable	(9)	138
Ending Allowance	378	594
Other construction loans and all land development and other land loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	4,033	3,253
(Charge-offs)	0	0
Recoveries	0	0
Provision (Benefit) for Credit Losses on Loans Receivable	222	141
Ending Allowance	4,255	3,394
Multifamily (5 or more) residential properties
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	1,030	2,353
(Charge-offs)	0	(65)
Recoveries	0	0
Provision (Benefit) for Credit Losses on Loans Receivable	37	247
Ending Allowance	1,067	2,535
Non-owner occupied, nonfarm nonresidential properties
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	9,170	7,653
(Charge-offs)	0	0
Recoveries	0	0
Provision (Benefit) for Credit Losses on Loans Receivable	(385)	606
Ending Allowance	8,785	8,259
1-4 Family Construction
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	356	327
(Charge-offs)	0	0
Recoveries	0	0
Provision (Benefit) for Credit Losses on Loans Receivable	(53)	71
Ending Allowance	303	398
Home equity lines of credit
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	831	1,173
(Charge-offs)	0	0
Recoveries	1	1
Provision (Benefit) for Credit Losses on Loans Receivable	65	(16)
Ending Allowance	897	1,158
Residential Mortgages secured by first liens
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	8,050	8,484
(Charge-offs)	(64)	(7)
Recoveries	0	0
Provision (Benefit) for Credit Losses on Loans Receivable	382	374
Ending Allowance	8,368	8,851
Residential Mortgages secured by junior liens
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	1,476	1,035
(Charge-offs)	0	0
Recoveries	0	0
Provision (Benefit) for Credit Losses on Loans Receivable	(45)	240
Ending Allowance	1,431	1,275
Other revolving credit plans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	973	722
(Charge-offs)	(15)	(22)
Recoveries	3	5
Provision (Benefit) for Credit Losses on Loans Receivable	(107)	125
Ending Allowance	854	830
Automobile
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	358	271
(Charge-offs)	(10)	(5)
Recoveries	3	0
Provision (Benefit) for Credit Losses on Loans Receivable	(47)	64
Ending Allowance	304	330
Other consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	2,653	2,665
(Charge-offs)	(517)	(540)
Recoveries	27	43
Provision (Benefit) for Credit Losses on Loans Receivable	548	393
Ending Allowance	2,711	2,561
Credit cards
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	95	67
(Charge-offs)	(29)	(62)
Recoveries	5	1
Provision (Benefit) for Credit Losses on Loans Receivable	27	67
Ending Allowance	98	73
Overdrafts
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Allowance	292	278
(Charge-offs)	(144)	(160)
Recoveries	25	44
Provision (Benefit) for Credit Losses on Loans Receivable	82	92
Ending Allowance	$ 255	$ 254